Type-writing machine.



No. 732,533. PATENTED JUNE 30, 1903.

w. b. FARNUM.

TYPE WRITING MAUHINBQ APPLIOATIQN FILED NOV.20;' 1901.

WITNESSES; INVENTEJH I y I ATTDR EY Tu: NORRIS PEYERS co, PuoTcuumo. WASHINGTON. uxc.

UNIT D STATES Patented Tune 30, 1903.

PATENT OF ICE.

WILLIAM C. FAR'NUM, OF ARLINGTON, VERMONT, ASSIGNOR TO UNION TYPEWRITER COMPANY, OF JERSEY OITY NEW JERSEY, A CORPO- RATION OF NEW JERSEY.

' TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 732,533, dated June 30, 1903.

Application filed November 20,1901. Serial No. 83,012. (No model.)

To (all whom it may concern:

Be it known that 1, WILLIAM G. FARNUM, a citizen of the United States,and a resident of Arlington, in the county of Bennington and State of Vermont, have invented certain new and useful Improvements in Type-Vriting Machines, of which the following is a specification. Y

My present invention relates to what may be termed auxiliary platen-feed mechanism for type-writing machines and by means of A parts of a type-writing machine is illustrated which the platen may be rotated in either direction to any extent independently of the ordinary line-spacing mechanism to bring any desired portion of the paper to the printingline. The auxiliary platen-feed mechanism is particularly available for irregular line-spacing or for filling in partly-printed blanks.

The object of my invention is to provide a simple and efficient device of the character described.

To the above and other ends, which will hereinafter appear, the invention consists in the novel arrangement and combination of parts hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings,wherein like reference characters indicate corresponding parts in the various views, Figurel is a topview of a platen and platen-frame, showing the ap-' plication of the device which constitutes the subject-matter of my invention. Fig. 2 is a fragmentary longitudinal sectional View of a portion of the same, the section being taken on the line 3 y of Fig. 3 and looking in the direction of the arrow in said figure. Fig. 3 is an end view of the same looking toward the right-hand end of the platen. Fig. 4 is an end View of the parts represented in Fig. 1 with portions thereof in section, the section being taken on the line w it of Fig. 2 and looking in the direction of the arrow in said figure.

In the drawings a sufficient number of to show my invention, the platen and platenframe shown being those of a No. 6 Remington type-writing machine.

The platen-frame 1 has a platen 2 mounted to rotate therein, and this platen may be provided with the usual finger-wheel'at the left- This line-spacing wheel is adapted to revolve independently of the shaft and is provided with the usual ratchet-teeth 6 on the periphery thereof, and a laterally-extending crown bevel-gear 7 projects fromthe outer face of the ratchet-wheel, and a hollow finger-wheel 8 is connected thereto by a screw 9. The ratchetwheel 5 likewise carries a cylindrical collar or abutment 10, which is adapted to contact with a gear-wheel 11, that is secured tothe platenshaft 3 by a screw 12, that projects through the flange 13 on the gear and bears at its inner end upon the platen-shaft. A finger-wheel 14 is mounted loosely upon the platen-shaft and carries a laterallyextending headed pin or stud 15, that constitutes the shaft upon which a bevel-pinion 16 revolves, the head of the pin preventing the displacement of the pinion from the shaft. The right-hand end of the shaft 3 is headed at 17, and interposed be tween this head 17 and the finger-wheel 14 is a spring-washer 18, the flection of which exerts a pressure between the finger-wheel 14 and the head 17 of the shaft, thus tending to force the finger-wheel in the direction of the bevel-pinion 16 cooperates with the teeth 19 and 20 on the two gears 7 and 11 respectively. A line-spacing pawl 21 cooperates with the teeth of the line-spacing wheel, and this pawl is pivoted at 22 to one arm 23 of a two-arm spacing-lever. The other arm 24 of this spac ing-lever is provided with a finger-piece 25, by

means of which it can be vibrated on its pivot 20, by which it is connected to the platenframe 1. The line-spacing lever is restored to the normal position by a spring 27, which bears at one end against a pin 28, projecting from the platen-frame, and at its opposite end against a pin 29, secured to the arm 23 of the spacing-lever. The spacing-pawl 21 is provided with a depending arm 30, that is adapted to bear when the parts are in the normal position (represented in Fig. 4) against any one of the three faces 31 of the controllingpiece 32, which is pivoted at 33 to the platenframe. This controlling-piece 32 limits the return movement of the line-spacing pawl and lover, and thus controls the throw thereof, so as to feed the distance of one, two, or three teeth of the ratchet-wheel in accordance with the adjustment of the controlling piece around its pivot 33. It will be understood that suitable means are provided to retain the controlling-piece in any one of the three positions to which it may be adjusted. The forward movement of the depending arm 30 of the line-spacing pawl is limited with relation to the arm by a laterally-projecting stop-pin 34. The arm 23 of the line-spacing lever is likewise provided with a rigid locking pawl or dog 35, which is adapted to be forced into contact with the teeth 6 of the line-spacing wheel when the line-spacing pawl has reached the limit of its movement, and thus prevent a rotation of the line-spacing wheel in either direction.

Cooperating with the peripheral teeth on the line-spacing wheel 5 is a detent-roller 36, carried by a spring 37, that is secured at 38 to the platen-frame and which presses the roller against the teeth. This spring-pressed roller 36 tends to maintain the line-spacing wheel against accidental displacement and assures an accurate positioning of the platen at regular line-space distances when the ordinary line-space mechanism just described is operated.

In the operation of the device for ordinary line-spacing a rotation will be given to the line-spacing wheel 5 by the spacing-lever, and a corresponding rotation will be transmitted to the platen 2 by reason of the fact that the various gears are in mesh, and the bevelpinion 1o will revolve bodily with the cooperating gears and with the finger-wheel 8. Should, however, the operator desire to provide a differential spacing-that is to say, to provide a rotating movement of the platen which diifers from that which may be attained with the line-spacing wheel 5-it is merely necessary to rotate the finger-wheel 14, which will cause the pinion 16 to be carried around with it. The pinion 1U, meshing as it does with the teeth of the gear 11, which is fixed to the pl aten-shaft, will cause the bevelpinion to be rotated, thus transmitting movement to the crown-gear 7, with which the pinion likewise meshes. The gear-wheels 7 and 11 being of different size and the pinion 16 being beveled will provide a differential movement of the gears 7 and 11. It should be understood that the gear 11 is preferably provided with a greater number of teeth than the gear 7. Thus we will assume that the gear 11 has thirty-two teeth, whereas the crowngear 7 has but thirty-one. It will follow, therefore, that a rotation of the finger-wheel 1 will cause a relative movement between the line-spacing wheel 5 and the platen 2, or, in other words,if theline-spacing wheelbe maintained against movement and the fingerwheel 14 is rotated it will effect a turning of the platen. The detentq'oller 36 maintains the line-spacing ratchet-wheel 5 fixed against rotation when the finger-wheel 1% is rotated, the tension of the spring 37 being suflicient for this purpose.

The finger-wheel 8, however, is at all. times effective to move the line-spacing wheel and the platen together, all of the parts at this time being moved bodily, as in the case when the line-spacing wheel itself is operated by its cooperating pawl 21.

It will be observed that the auxiliary platenfeedmechanism in addition ,to its employment as a means for bringing any desired point on the paper to the printing-line is also available as a means for distributing the wear on the platen-that is to say, it may be used to change the relative position of the linespacing wheel and the platen, so thatthc points of impact between the type and the platen may be changed and the wear distributed over the entire surface of the platen instead of upon fixed lines, as is ordinarily the case where the line-spacing mechanism alone is employed.

Vhile I have shown the bevel-pinion 16 as a single pinion, it is obvious that two such pinions may be employed, one cooperating with each of the gears 7 and 1.1, and that suitable connection may be made between the separate bevel pinions and various other changes may be made in the construction and operation of the device without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent, is

1. In a type-writing machine, the combination of a platen, a line-spacing wheel,'a gearwheel which is supported and carried by said spacing-wheel, a finger-wheel carried by said gear-wheel for rotating the platen and spacing-wheel together, a gear-wheel connected to the platen, a regulating fingernvheel, and a gear-wheel carried. thereby and adapted to cooperate with the other gear-wheels to effect a movement of the platen relatively to the linespacing wheel when the regulating fingerwheel is turned.

2. In a type-writing machine, the combination of a platen, a platen-shaft to which said platen is secured, a line spacing ratchetwheel, a crown gear-wheel carried by said bevel-gear connected to said ratchet-wheel, a

bevel-gear connected to the platen, and a bevelgear which is carried loosely by the regulating finger-wheel and cooperates with the other gears to effect a movement of the platen-and ratchet-wheel one with relation to the other when said regulating-wheel is rotated.

4. In a type-writing machine, the combination of a platen, a line-spacing ratchet-wheel,

a finger-wheel carried by said ratchet-wheel for rotating said platen an d ratchet-wheel together, a regulating finger-wheeha toothed bevel crown-gear connected to the platen, and a toothed bevel-gear which is loosely carried by the regulating finger-wheel and cooperates with the other gears to effect a movement of the platen and ratchet-wheel one with relation to the other when said regulating-wheel is rotated. V

5. In a type-writing machine, the combina tion of a platen, a line-spacin g ratchet-wheel, concentric gears one of which is connected to the ratchet-wheel and another to the platen, a regulating finger-wheel, and a gear-Wheel which revolves relatively to said finger-wheel and cooperates with the other gear-wheels to effect a movement of the platen relatively to the line-spacing ratchet-wheel. I

6. In a type-writing machine, the combination of a platen, a line-spacing wheel, concentric gears,- one of which is connected to the ratchet-wheel and another to'the platen, a

finger-wheel which is connected to one of said gears and is operative'to rotate the platen and.

gear wheels together, a regulating fingerwheel, a gear-wheel which is carried thereby and cooperates with the other gears to effect a movement of the platen independently of the line-spacing wheel.

. y g 7. In a type-writing machine, the combination of a platen, a line-spacing wheel, a crown-' gear carried thereby, a gear-wheel which is 7 connected to the platen and which is concentric to the crown-gear, a finger-wheel which is connected to the crown-gear and which surrounds it and the gear which is concentric thereto, said finger-wheel being operative to rotatethe platen and gear-wheels together, a regulating finger-wheel, and a gear which is carried thereby and cooperates with the other gears to effect a movement of the'platen independently of the line-spacing wheel.

8. .In a type-writing machine, the combina tion of a platen, a line-spacing wheel, a bevel crown-gear carried thereby, a bevel gearwheel which is connected to the platen andis concentric to the crown-gear, a finger-wheel which is connected to the crown-gear and.

which surrounds it and the gear which is concentric thereto, said finger-wheel being operative to rotate the platen and gear-wheels together, a regulating finger-wheel, a bevelgear which is carried by said regulating fin- -ger-wheel and revolves relatively thereto and cooperates with the other gears to eifect a movement of the platen independently of the line-spacing wheel.

9. In a type-writing machine, the combination of a line-spacing wheel, a platen which is adapted to rotate independently of said linespacing wheel, a regulating finger-wheel, interm ediate gear connections between the regulatin fin ger-wheel and the line-spacing wheel and between the regulating finger-wheel and the platen, and a spring which bears upon said finger-wheel and maintains a close engagement between said gear connections.

10. In atype-writingmachine, the combination of a platen, a line-spacing ratchet-Wheel therefor, a train of differential bevel-gears cooperating with theplaten and ratchet-whe el and a finger-wheel which carries one of said bevel-gears and is adapted to move it bodily to operate the other gears to effect a movement of the platen and ratchet-wheel one with relation to the other.

Signed at Arlington, in the county of Bennington and State of Vermont, this 15th day of November, A. D. 1901.

' WILLIAM C. FARNUM.

Witnesses:

FRANKLIN SCOTT, J. J. KEATOR. 

